<template>
  <div>
                              <!-- 面包屑导航区域 -->
 <el-breadcrumb separator-class="el-icon-arrow-right">
  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>数据统计</el-breadcrumb-item>
  <el-breadcrumb-item>数据报表</el-breadcrumb-item>
</el-breadcrumb>
<!-- 卡片视图 -->
<el-card>
    <!-- 2.为ECharts准备一个具备大小（宽高）的Dom -->
     <div id="main" style="width: 700px;height:400px;"></div>
</el-card>
  </div>
</template>

<script>
//1.导入
import echarts from 'echarts'
import _ from 'lodash'
export default {
    data(){
        return{
            //需要合并的数据
            options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
        }
    },
    created(){

    },
   async mounted(){
          // 3.基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));

      const {data:res}= await this.$http.get('reports/type/1')
      if(res.meta.status!==200){
          return this.$message.error('获取折线图数据失败')
      }
     //  4. 指定图表的配置项和数据
      const result= _.merge(res.data,this.options)
        //5.展示数据
         myChart.setOption(result);

    },
    methods:{

    }
}
</script>

<style lang="less" scoped>

</style>